try:
reply = self.commands[cmd](msg, args)
except Exception as err:
- reply = traceback.format_exc(err)
+ reply = ''.join(traceback.format_exc())
self.log.exception('An error occurred processing: {0}: {1}'.format(body, reply))
self.send_message(mto=msg['from'].bare, mbody=reply, mtype='groupchat')